Dispensing pump



July 24, 1928. 1,678,051

c. L. BAsTlAN DISPENSING PUMP Filed Dec. 1, 1926 z2 m il,

Patented July 24, 1928.

UNITED STATES CHARLES L. BASTIAN,

OF CHICAGO, ILLINOIS, ASSIGNOR TO THE BASTIAN-BLESSING f COMPANY, oFCHICAGO, ILLINOIS, A CORPORATION or ILLINOIS.

DISPENSING PUMP.

implication mea December This invention-relates to dispensing pumpsofthe kind which are designed more especially for use in soda fountainjars and other receptacles for dispensing av charge of syrup,

milk or other liquids.

Such pumps are usually rect pressure upon a spring which tires anoperator at a busy fountain and somtimes causes pain and swelling of thehand and wrist.

The object of this invention is to provide a dispensing pumpof simpleconstruction for dispensing a measured charge of syrup or other liquidand having a lever handle whereby it maybe easily operated withouttiring the operator or injuring his. hand.

In the accompanying drawing illustrating a selected embodiment of theinvention:

operated by di- Fig. 1 is a sectional view showing the upper part of thepump.

Fig. 2 is a sectional view showlng the entire pump. t

Figs. 3 and 4 are detail perspective views.

Fig. 5 is a sectional view on the line 5-5 of Fig. 2. j

Referring to the drawings the pump comprises a charge chamber 5 and ahollow head or housing 6 connected by a rod or support 7. A dischargetube 8 projects down 1n the charge chamber close to the bottom thereofand is connected at 9 to the wall of the charge chamber, This tubeextends up through the plate 10 of t-he head of the pump and is providedwith a spout 11. A plunger 12 operates in the chamber 5 and it ismounted on the rod 13 which extends up through the plate 10 and into thehead 6 and is provided with a flat cap 14 on its upper end. A shaft 15rectangular in cross section has one end 16 turned round to work inasocket 17 in one side wall 6 of the head. The other side wall 6" of thehead has an enlarged opening 18 to freely accommodate the square shaftwhich projects through this opening and carries a handle lever 19 whichis secured thereon by a screw 20. A yoke lever 21 is mounted on thesquare shaft 15 within the head and is held in position thereon by a setscrew 22 and it has two parallel arms 22 which are connected at theirouter ends by a pin 23 which carries a roller 24 located between theends of the arms to bear u on the cap 14. The cap is seated against t eroller between the ends of the arms 22 which form guides forretainpressed plunger,I

1, 192e. seriai No. 151,947,"

ing the cap in proper position, and a spring 25 is arranged on theplunger rod beneath the capfor holding the cap against the roller at alltimes.l The lower end ofthe spring i 25 is seated in a sleeve 26 whichis arranged on the plunger rod and is screw threaded in an opening inthe plate l0 anda reinforcing plate 10, secured thereto by screws 27.The sleeve is adjustable in the plates 10-10 to adjust the plunger inthe chamber for controlling the charge yof liquid to bedispensed, and alock ynut 28 is arranged on the sleeve to engage the plate '10 forsecuringl The charge the sleeve in adjusted position. chamber isprovided with a'valved opening 29 in its bottom and the handlelever ispreferably provided with a rounded knob 30 at its outer end. f Inpractice the sleeve 26 and lock nut 28 are adjusted to regulate thetravel of the plunger for dispensing a measured charge of syrup. Whenthe" handle lever is pressed downward theplunger rod and plunger aredepressed and the syrup is forced out of the charge chamber through thetube 8 and spout 11. When the pressure upon the handle is released thespringreturns the plunger and plunger-'rod to initial position and atthe same time syrup enters the chamber through the valved opening 29 foranother charge. The spring'25 is confined between the cap 14 and thesleeve 26. The down stroke of the plunger is limited by engagement ofthe cap 14 with the upper` end of the sleeve; the up stroke of theplunger is limited by engagement of the ends of the arms 22 with the topof the head. The roller 24 constantly engages the cap and travels backand forth on the cap as the yoke lever is swung by operation of thehandle lever. The invention provides a dispensing pump of simpleconstruction, having relatively few parts and none of which are delicatein construction or liable to getout of order. The construction is suchthat the operation of the pump is made easy for the operator so that ata soda fountain, but,l it will be apparent that the invention may beemployed for vother purposes and that the construction may be changed asrequired to adapt it for different purposes within the scope of thefollowing claims.

ll claim:

L In a dispensing pump, the combination of a charge chamber, a dischargetube leading from the chamber, a plunger operating in the chamber, aplunger rod connected to the plunger, a cap on the upper end of theplunger rod, a head enclosing the capped end of the plunger rod, ahandle rotatably mounted outside of said head, lever devices operated bysaid handle and unconnected with said cap but operating thereon duringrotatable movement of said handle for depressing the plunger and plungerrod, and

'a spring for returning the plunger and plunger rod to normal position.

2. In a dispensing pump, the combination of a charge chamber, adischarge tube leading from the chamber, a plunger operating in thechamber, aplunger rodconnected to the plunger, a cap on the upper end ofthe plunger rod, a head enclosing the capped end of the plunger rod,arock shaft supported in the head, a handle lever carried by said shaftoutside of the head to rock said shaft, a lever mounted on the shaftWithin the head, a roller carried by said lever and arranged` to travelback and forth on the ca during rotatable movement of the handle, tooperate the plunger and plunger rod, and a spring for returning theplunger and plunger rod to normal position.

3. In a dispensing pump, the combination of a charge chamber, adischarge tube leading from the chamber, a plunger operating in thechamber, aplunger rod connected to the plunger, a cap on the upper endof the plunger rod, a head enclosing the capped end ofthe plunger rod, arock shaft sup` ported in thehead, a handle lever mounted on the rockshaft outside of the head, a `yoke lever mounted on the rock shaftWithin the head and Comprising a pair of arms, said arms being arrangedto embrace said cap,

a roller carried by said arms and arrangedy to travel on the cap, saidhandle lever adapted to be operated to rock said shaft and swing saidyoke leverL to depress the vplunger and plunger rod, and a spring forreturning the plunger and plunger'rod to normal position.

Guitarrasv L.i BAsTrAN.

